//
//  WBNaviationController.swift
//  新浪微博
//
//  Created by shanlin on 2017/8/9.
//  Copyright © 2017年 shanlin. All rights reserved.
//

import UIKit

class WBNaviationController: UINavigationController {

    override func viewDidLoad() {
        super.viewDidLoad()

        //隐藏默认的navigationBar
        navigationBar.isHidden = true
    }
    
    
    override func pushViewController(_ viewController: UIViewController, animated: Bool) {
        if viewControllers.count>0 {
            viewController.hidesBottomBarWhenPushed = true
            
            if let vc = viewController as? WBBaseViewController {
                var title = "返回"
                if childViewControllers.count == 1 {
                    title = childViewControllers.first?.title ?? "返回"
                }
                
//                vc.navItem.leftBarButtonItem = UIBarButtonItem(title: title, target: self, action: #selector(popToParent))
                vc.navItem.leftBarButtonItem = UIBarButtonItem(title: title, fontSize: 16, target: self, action: #selector(popToParent), isBack: true)
                
            }
        }
        
        
        
        
        super.pushViewController(viewController, animated: true)
    }
    func popToParent() {
        popViewController(animated: true)
    }

}
